Vulnerability in Pengutronix Rauc
CVE-2020-25860
The install.c module in the Pengutronix RAUC update client prior to version 1.5 has a Time-of-Check Time-of-Use vulnerability, where signature verification on an update file takes place before the file is reopened for installation. An attacker who can modify the update file just before it is reopened can install arbitrary code on the device.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.014 (71.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Pengutronix Rauc
- N/a Pengutronix Rauc — versions All versions before 1.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vuln@vdoo.com (Exploit, Third Party Advisory, x_refsource_MISC)
- vuln@vdoo.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-25860?
- CVE-2020-25860 is a medium-severity vulnerability in Pengutronix Rauc, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.6/10. Published 2020-12-21.
- How severe is CVE-2020-25860?
- Medium severity. CVSS v3 base score is 6.6 out of 10.
- Is CVE-2020-25860 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.